| UNIVERSIDADE DO PORTO Patent applications |
| Patent application number | Title | Published |
|---|
| 20100128877 | Systems and Methods for Providing Opportunistic Security for Physical Communication Channels - Systems and methods of providing opportunistic security for physical communication channels are disclosed. One disclosed method is for opportunistic secure communication on a main channel between a sender device and a receiver device when an eavesdropper device is listening on an eavesdropper channel. This example method includes transmitting, in a first time period in which signal quality on the main channel is better than signal quality on the eavesdropper channel, symbols that are randomly selected from a set of symbols. The method also includes transmitting, in a second time period in which signal quality on the main channel is not better than signal quality on the eavesdropper channel, coding information associated with the randomly selected symbols. The method also includes reconciling the randomly selected symbols using the coding information. | 05-27-2010 |
| 20090308376 | SMART DEVICE FOR ABSORBING SOLAR ENERGY AND CONTROLING SUNLIGHT ADMISSION - The present invention provides a process for absorbing solar energy and, simultaneously having a continuous control of the light admission making it possible to install the device in external openings of buildings and equipment, such as windows, shutters or skylights. The system comprises two frames which support plates of transparent material, between which it is possible to introduce a colourful solution coming from an external reservoir. Both frames are interconnected through a flexible membrane which allows the plates to be pushed against each other, making the window transparent, or pushed away interposing the colourful solution, which will make the window uniform and gradually translucent or opaque. The said liquid comes from a reservoir and the access to the gap between the plates through is obtained by means of a channel that separates the two frames, allowing the liquid to flow evenly into the whole surface, thus being a homogenous and adjustable darkening obtainable. The inflow or outflow of the liquid between the plates is ruled by the vacuum level inside the reservoir containing the colourful solution. When the window is opaque or partially transparent, the solar energy heats the liquid which is then forced to flow by a circulating pump, passing through a heat exchanger which allows the energy absorption. | 12-17-2009 |
| 20090270665 | DEVICE TO SEPARATE OLEFINS FROM PARAFFINS AND TO PURIFY OLEFINS AND USE THEREOF - The present invention discloses a device, which uses membranes, capable of separating olefins from paraffins. The device ( | 10-29-2009 |
| 20090269826 | VACCINE AGAINST STREPTOCOCCUS AGALACTIAE INFECTION USING NATIVE OR RECOMBINANT S. AGALACTIAE GLYCERALDHEYDE-3-PHOSPHATE DEHYDROGENASE (GAPDH) AS A TARGET ANTIGEN - The present invention regards a vaccine against | 10-29-2009 |
| 20090081796 | METHOD FOR THE DETERMINATION OF PHOSPHOLIPIDS IN AMNIOTIC FLUID SAMPLES - The present invention refers to a fast method for the determination of phospholipids in amniotic fluid samples by HPTLC (high performance thin layer chromatography). This innovative method presents high sensitivity, reproducibility and resolution. It has also the advantage of being of easy laboratorial interpretation, allowing the elimination of false results due to the contamination of the sample with blood or meconium. | 03-26-2009 |
| 20090012326 | Use of Salicylate as an Antidote for Paraquat Intoxications in Mammals - The present invention concerns to the use of salicylate in the treatment of mammal intoxications caused by the herbicide paraquat (PQ). It was achieved, for the first time, 100% of survival 30 days after the administration to Wistar rats, by intraperitoneal route, of a PQ dose that, in the absence of treatment, is itself 100% lethal at the end of 6 days. The administration of salicylate, two hours after PQ, reversed the PQ toxicity and extended the life of the animals to the levels of the control group. | 01-08-2009 |
| 20080215248 | Method and Device for the Measurement and Identification of Biofilms and Other Deposits Using Vibration - The present invention concerns a method and device to monitor the formation and removal of biofilms and other deposits in ducts, reservoirs and equipments, using vibration. The afore mentioned device is composed by an element that generates vibration ( | 09-04-2008 |
